public async Task <Checkout> GetOrCreateCheckout(int?checkoutId)
{
if (!checkoutId.HasValue)
{
return(await _checkoutRepository.AddAsync(new Checkout()));
}
var checkoutSpecification = new CheckoutWithUnitsSpecification(checkoutId.Value);
var checkout = await _checkoutRepository.FirstAsync(checkoutSpecification);
Guard.Against.Null(checkout, nameof(checkout));
return(checkout);
}
public async Task <IEnumerable <Checkout> > GetCheckouts()
{
var checkoutSpecification = new CheckoutWithUnitsSpecification();
return(await _checkoutRepository.ListAsync(checkoutSpecification));
}